Photosynthesis
Cellular Respiration
Anaerobic Respiration/ Fermentation
Random Unit 3 Q's
Picture Questions
100
What is the primary pigment in plant cells that captures light energy for photosynthesis AND where is it located?
Chlorophyll
Thylakoid membrane
100
Who can perform cellular respiration?
Plants & animals!
100
Fermentation is what kind of respiration: Aerobic or Anaerobic?
Anaerobic
100
This factor directly affects the rate of photosynthesis by altering the energy available to excite electrons.
Light Intensity
100
This organelle produces the most ATP during cellular respiration.
Mitochondria
200
What are the outputs of the light dependent reaction?
NADPH, ATP, and O2
200
(1) What is the primary molecule that cells use as a source of energy and (2) which gas is required for cellular respiration?
(1) Glucose (C6H12O6)
(2) Oxygen (O2)
200
What molecules/compounds are released during alcoholic fermentation?
Carbon dioxide, alcohol (ethanol), ATP
200
What are the steps of cellular respiration (in order) and their specific locations?
(1) Glycolysis - Cytoplasm
(2) Krebs Cycle/Citric Acid Cycle - Mitochondria Matrix
(3) Electron Transport Chain (ETC) and ATP Synthase - Inner Mitochondrial Membrane
200
Draw a chloroplast and label it with the following terms: grana, stroma, thylakoid.
300
Explain what specifically happens in the light dependent reaction that causes O2 to be released?
When an electron is excited and moves through the thylakoid membrane, it is replaced by an electron from water that is split, releasing H⁺ ions and oxygen gas as a waste product.
300
Why do humans rely on cellular respiration?
Humans rely on cellular respiration because it produces and provides cells with the energy they need to function.
300
Lactic acid can build up in muscles if oxygen is not available in animal cells.
(1) What type of respiration is this an example of (be specific)?
(2) Is this build up permanent?
(3) Why or why not?
(1) Lactic Acid Fermentation
(2) No!
(3) It's not permanent because if you rest and let your body recover, you give your body a chance take in more oxygen!
300
What role do NADH, NADPH, and FADH2 play in both photosynthesis and cellular respiration?
NADH, NADPH, and FADH₂ are electron carriers that transfer high-energy electrons to help make energy. In photosynthesis, NADPH provides electrons to build sugars in the Calvin Cycle, while in cellular respiration, NADH and FADH₂ carry electrons to the electron transport chain to produce ATP.
300
Both of these cycles occur in different organelles, but each uses or produces energy carriers. Name each of these cycles.
A - Krebs Cycle
B - Calvin Cycle
400
Explain the main purpose of the Calvin cycle.
The main purpose of the Calvin Cycle is to use the energy from ATP and NADPH, which are produced during the light-dependent reactions, to make glucose or other sugars from carbon dioxide (CO₂).
400
What products from the Krebs Cycle are brought into the ETC AND what products are released after the ETC?
Brought in = NADH, FADH2, O2
Released = 32-36 ATP, H2O
400
How does ATP production differ between anaerobic and aerobic respiration?
Aerobic respiration produces much more ATP (about 36-38 ATP per glucose) because it uses oxygen. Anaerobic respiration produces much less ATP (about 2 ATP per glucose) because it doesn’t use oxygen and relies only on glycolysis and fermentation.
400
We know both photosynthesis and cellular respiration utilize the same molecules, but how do the reactions use them?
Photosynthesis uses energy (sunlight), carbon dioxide, and water to make glucose and oxygen!
Cellular respiration uses glucose and oxygen to make energy (ATP), carbon dioxide and water!
400
This is an image of the ETC during a specific metabolic process. (1) Which metabolic process is this AND (2) which molecules supply the electrons used to produce energy in this step?
(1) Cellular Respiration
(2) NADH and FADH₂